26144642056 has 24 divisors (see below), whose sum is σ = 53082134730. Its totient is φ = 12066757248.

The previous prime is 26144642053. The next prime is 26144642063. The reversal of 26144642056 is 65024644162.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 12023122500 + 14121519556 = 109650^2 + 118834^2 .

It is not an unprimeable number, because it can be changed into a prime (26144642053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9667525 + ... + 9670228.

Almost surely, 2^26144642056 is an apocalyptic number.

26144642056 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

26144642056 is an abundant number, since it is smaller than the sum of its proper divisors (26937492674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26144642056 is a wasteful number, since it uses less digits than its factorization.

26144642056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19337785 (or 19337768 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 26144642056 in words is "twenty-six billion, one hundred forty-four million, six hundred forty-two thousand, fifty-six".